I think the line between "experienced" users and "newbies" is quite foggy in Steemit. It's a different project and the financial component is already an important part of it. I believe many users will want to "gauge" their involvement with the platform based on the ROI too (apart from time, skills, etc) so small one pagers like steem.supply, where you can see in a second where you stand, from a financial point of view, can be useful.
Thanks for the nice words, btw, always appreciated :)